Chelsea
Massachusetts, USA
Long-term weather forecast
Long-term weather forecast

July weather forecast and climate
Chelsea, MA

Ocean temperature

In July, the average ocean temperature in Chelsea, Massachusetts, is 65.7°F (18.7°C).
Note: For swimming, a surface water temperature of 65.7°F (18.7°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

In Chelsea, Massachusetts, the average length of the day in July is 14.9h.

What is the ocean temperature in July in Chelsea?

In Chelsea, the average seawater temperature in July is 65.7°F (18.7°C). For most, swimming in 65.7°F (18.7°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

How many hours of daylight does Chelsea have in July?

In July, the average length of the day in Chelsea is 14.9h.
Average sea temperature in July - Chelsea, MA
  • Average sea temperature in July: 65.7°F

The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (38.1°F).

Average daylight in July - Chelsea, MA
  • Average daylight in July: 14.9h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.1h).